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Joined 3 years ago
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Cake day: June 3rd, 2023

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  • No, work done only cares about the start and the end. What happened in-between doesn’t matter.

    In this case, the kinetic energy is 0 at the start and end, but the potential energy of the mass increased by mgh. 5 kg * 9.81 m/s2 * 2 m = 98.1 J (1 J = 1 N•m).

    It’s not as easy as applying work = force * sloped distance, since she’s not simply accelerating the mass. If she did, it would have horizontal kinetic energy at the end. She’s stopping it too (well, the friction is stopping it, but we’re ignoring friction).










  • glibg10b@lemmy.mltoScience Memes@mander.xyz17 years*
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    2 months ago

    What’s worse is that there are modern alternatives that can process hundreds of transactions per second without any mining at all

    But Bitcoin people don’t care about that because they don’t use Bitcoin for actual payments, they use the price to pump their bags